Strangely enough I haven't had any issues with Telltale games yet. Having said that I've only ever played Walking Dead on Steam and that's all. Lost a bit of interest after that one.
I'm still playing Hotline Miami 2, it's still really great. Had the prison break, and just finished the nightclub level which was really tough.
Also playing King of Fighters '98: Ultimate Match, Final Edition. My fave KoF so far, and the steam port is great.